Danner has designed the ultra-versatile 8" Tachyon to be the ultimate lightweight duty boot. The rough-out leather and 500 denier nylon upper reduces excess weight and enhances environmental protection for optimal performance and flexibility. The Tachyon rubber outsole provides superior traction on any terrain and is slip-resistant for added utility. An EVA midsole absorbs shock for softer landings, and the open cell polyurethane footbed promotes ventilation. The speed lace system makes taking the boot on and off easy, but still maintains a secure, comfortable fit. The nylon shank delivers torsional rigidity and heel security as well. If you're looking for rugged, comfortable AR 670-1 compliant footwear, you can't go wrong with this boot.